Yeah, but make sure you do sleep enough. I neglected sleep for years, sleeping for 2-4 hours a day - on average, with sometimes 2-3 days without sleep at all - and I though I was doing fine. When it finally caught up to me I had a major epilepsy episode at the office, which was not nice. I since started to value a solid 8-9 hours sleep much more than before. This "much" of sleep is probably not really needed, but right now I'd rather be safe than (even more) sorry. YMMV ofc, but just keep in mind the dangers when deciding to sleep less to do something else.